Smallest Wireless Camera For Robot

Hello All,

I am in the process of making a very small robot that is powered off of 4 rechargeable AAA batteries. I am hoping to put wireless camera on it so that it can be remotely operated. However the camera has to be very small to accommodate the size of the robot (overall dimensions of robot are 3" by 2" by 2" ) The other issue is power, the maxmium power I have is 5 volts so I would need a wireless camera that uses at or below that voltage. I have a camera similar to this one eBay Camera The size is okay but it requires 9 volts and the 2.4 GHz interferes heavily with the Xbees in my robots.

Any advice anyone has is greatly appreciated!

thank you.